#0A0240#0A0240

#0A0240 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.1% C 0.108 H 274.7°. Best body text is #FFFFFF at 19.17:1 contrast (WCAG AA passes).

Color values

HEX	#0A0240
RGB	rgb(10, 2, 64)
HSL	hsl(248, 94%, 13%)
HSV	hsv(248, 97%, 25%)
CMYK	cmyk(84.4%, 96.9%, 0%, 74.9%)
CIE-LAB	lab(4.32, 24.55, -36.04)
CIE-LCH	lch(4.32, 43.61, 304.27°)
OKLab	oklab(18.13% 0.009 -0.108)
OKLCH	oklch(18.13% 0.108 274.7)
XYZ	xyz(1.0720, 0.4780, 4.8853)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 1.82

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0240 #384002

analogous

#021940 #0A0240 #290240

triadic

#0A0240 #400A02 #02400A

tetradic

#0A0240 #400219 #384002 #024029

square

#0A0240 #400219 #384002 #024029

split-complementary

#0A0240 #402902 #194002

monochromatic

#05011E #05011E #0A0240 #13047B #1D06B7

Accessibility & contrast

On white

19.17

#0A0240 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A0240 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0240

19.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0240	#FFFFFF	#000000	##FFFFFF
##0A0240	1.00	19.17	1.10	19.17
#FFFFFF	19.17	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001242

Deuteranopia (green-blind)

#000C3F

Tritanopia (blue-blind)

#001622

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #0a0240;
/* rgb */ color: rgb(10, 2, 64);
/* oklch */ color: oklch(18.1% 0.108 274.7);

Tailwind

colors: {
  custom: {
    50: '#544676',
    500: '#0a0240',
    950: '#000000',
  },
}

SCSS

$custom: #0a0240;
$custom-light: #544676;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0240",
  "rgb": {
    "r": 10,
    "g": 2,
    "b": 64
  },
  "hsl": {
    "h": 247.742,
    "s": 93.939,
    "l": 12.941
  },
  "oklch": {
    "l": 0.18127,
    "c": 0.10833,
    "h": 274.7
  },
  "luminance": 0.00478
}

Semantic roles & 50–950 ramp

primary

#0A0240

secondary

#75831B

accent

#FF29E3

background

#F5F3F7

surface

#E9E5ED

border

#C5C1C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A0240

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →